发明授权
US08164495B2 Integrated non-linearity (INL) and differential non-linearity (DNL) correction techniques for digital-to-analog converters (DACS) 有权
用于数模转换器(DACS)的集成非线性(INL)和差分非线性(DNL)校正技术

  • 专利标题: Integrated non-linearity (INL) and differential non-linearity (DNL) correction techniques for digital-to-analog converters (DACS)
  • 专利标题(中): 用于数模转换器(DACS)的集成非线性(INL)和差分非线性(DNL)校正技术
  • 申请号: US12877904
    申请日: 2010-09-08
  • 公开(公告)号: US08164495B2
    公开(公告)日: 2012-04-24
  • 发明人: Iskender Agi
  • 申请人: Iskender Agi
  • 申请人地址: US CA Milpitas
  • 专利权人: Intersil Americas Inc.
  • 当前专利权人: Intersil Americas Inc.
  • 当前专利权人地址: US CA Milpitas
  • 代理机构: Fliesler Meyer LLP
  • 主分类号: H03M1/06
  • IPC分类号: H03M1/06
Integrated non-linearity (INL) and differential non-linearity (DNL) correction techniques for digital-to-analog converters (DACS)
摘要:
INL values are determined for a plurality of sub-segments of a DAC that is adapted to accept N bit digital input codes, and a first set of correction codes that can be used to reduce to a range of INL values (to thereby improve linearity of the DAC) are determined and stored. Additionally, DNL values are determined for the plurality of sub-segments for which INL values were determined, and a second set of correction codes that can be used to ensure that all values of DNL>−1 (to thereby ensure that the DAC is monotonic) are determined and stored. This can include using one or more extra bits of resolution to remap at least some of the 2^N possible digital input codes (that can be accepted by the DAC) to more than 2^N possible digital output codes, to ensure that all values of DNL>−1. Such stored first and second sets are thereafter used when performing digital to analog conversions.
信息查询
0/0